Not comfortable in using complex semantics of UML for capturing business needs, worried if you are using the right semantic elements in the UML design for your business? Rational Software Architect Sketcher makes things simpler. You can illustrate any technology-related or business-related interaction at a high level of abstraction using simple graphical shapes such as rectangles, circles, cylinders, stick figures in RSA sketcher diagram. You would be able to create multiple layers in the sketcher diagram to capture how the design has evolved over during different phases. You can add links to sketcher elements to reference external resources.

What Next: When you are ready to move to a more specific and detailed model, you can convert the elements in the sketch to specific modeling elements like UML model elements or topology elements depending on the RSA capability. The shapes in the sketcher diagram are also linked to the model elements to allow you move back and forth.